Today, Cisco and Travelers replaced Citigroup and GM on the Dow. Here is a look back at the previous 10 changes to the Dow and what happened to the benchmark in the days leading up to and following the change.

With stocks rallying for over 3 months now, dividend yields continue to fall back to Earth. Today, two new components join the Dow, one with a dividend and one without. See how the 30 companies in the Dow compare.

Stocks rose for a third straight week as investors got their game on for a recovery. Still, Friday's trading was choppy as investors cheered an early pop from the smaller-than-expected job loss in May but the market couldn't sustain the gains.

Already on Wednesday, investors were counting down to Friday's jobs report, and not much in between matters. Thursday's main events include weekly jobless claims, data on productivity and costs, and monthly chain store sales, which are expected to be weak and show the U.S. consumer remains reluctant to spend.

The Dow Industrials briefly turned positive for the year earlier this morning. WAHOO! But wait…the S&P 500 turned positive for 2009 nearly one month ago and is now up over 4.5% this year. So why the performance lag in the Dow (compared to the S&P)?

With the exit of Citigroup and GM from the Dow, new comers Cisco and Travelers bring some heft back into the index. As of Monday's close, the price weighted index is taking out $4.44 (combined price of Citi and GM) and adding in $61.41 (CSCO + TRV). Here's how this change will impact the weight of the remaining 28 stocks of the Dow.

Often when a company is added to a major index, it sees a lift in its share price both from the publicity as well as from the need for tracking funds to buy the new components. But is there an arbitrage play to profit even more?